We live in a digital era, where people see the internet as their primary source of information. They consume information through it for various purposes. You will see people accessing the internet to entertain themselves through online content. They may also try to find solutions to the problems they face in their everyday lives by consuming the information available online. The online information and content also help them stay aware of current affairs.

It is hardly possible to overestimate the importance of power supplies in modern engineering and electronics. Such equipment allows the transformation and transmission of electrical power within an appropriate format depending on its.application to a particular device. However, such concepts of electricity as alternating current (AC) or direct current (DC) power supply are important for both active people and professionals alike in the area. The present paper sets out to do just that: describe the operational principles, advantages, and typical applications of two of the most important power supply units - AC and DC.